Air heater



Patnted July 4,' w22 INVENTOR a ww M M Y E Si HCE.

-MICHAEL ACHALACHTI, OF N EW YORK, N. Y., ASSIGNOR OF ONE-FOURTH TOGEORGE L. LIVINGSTON AND ONE- YORK, N. Y.

FOURTH TO ABRAHAM OKU'N,4 OF NEW AIR HEATER.

Fatented July a, i922.

Application leid October l1, 1918. Serial No. 257,723.

T all whom t may concerne.

Be it known that I, MICHAEL HAGHA- LACHTI, a citizen of Finland,residing in the city of New York, borough' of Manhattan, county andvState of New York, have invented a certain new and useful Air Heater, ofwhich the following is a speciication.

This invention is a heater adapted to directly heat substantially allthe air of dwelling and work rooms and similar quarters. The source ofheat may be gas, oil, electricity, steam or other suitable heating agentor agents.

The well known gas, oil, steam and electric heaters usually heat byradiation. That is to say, a heat conducting body of metal or equivalentmaterial, is heated to a certain temperature, generally considerablyabove that of the average temperature of the room or other place inwhich the heater is located, and such heated metal or other materialprimarily imparts a relatively high temperature to the immediatelyassociated air, which, in'turn, as a secondary effect, heats a furtherbody of adjoining air, etc. There is little or no attempt to secure acirculation of air, whereby a relatively large body of air, to behea-ted, is continuously brought into contact, or substantial contact,with the original source of heat. Usually the circulation is onlyincidental, and, in the case of gas, oil and similar direct actingheaters, usually only suilicient air is mixed with the burning oil orgas, or products of combustion, to assure complete combustion.

As the specific heat of air varies, the higher the temperature thehigher the speciiic heat, it follows that to heat a given mass or strataof air, adjoining a heater, to a relatively high temperature and,particularly, when no provision is made for circulating the air, is aslow, inehicient method of heating, room or other chamber with anythinglike the desired uniformity.

The present invention, overcomes the disadvantages adverted to, andothers, in that it embodies a simple and eflicient structure foreconomically heating a large body of air, automatically kept incirculation, and without unduly raising the temperature of any part ofthe heater or therimmediately associated strata or body of air.

Speaking generally, the invention, from a structural standpoint,embodies a heater of and, moreover, does not heat av any suitable type,in combination with a superimposed structure divided into a plurality offlues or tubes, preferably a relatively large number, through which theproducts of combustion (if a gas or oil stove or burner is employed asthe source of heat) and a large quantity of air are passed upwardly orcirculated, the lines or tubes serving to break up the air, (and mixedproducts of combustion) into a relatively large number of comparativelysmall columns, thereby precluding eddying or confusion of the heatedcurrents, and thus contributing to effective circulation.

Features of the invention, other than those specified, will be apparentfrom the hereinafter detailed description taken in conjunction with theaccompanying drawing.

In the accompanying drawing, l have illustrated one practical form ofthe invention, but the construction shown therein is to be understood asillustrative, only, and not as defining the limits of the invention.

Figure l shows the heater in elevation, with a part of the externalcasing broken away; and

Figure 2 is a view on line 2-2 of Figure l, looking in the direction ofthe arrows, showing, more particularly, the interior construction of theair heating chamber.

Referring to the drawing, 1 is the air chamber, preferably shaped asshown, having an expanded base 2 and double truncated top or dome 3which may be provided with a cover 4. In the form shown, the air chamberis provided with vertical radial partitions 5, which may be held inplace, properly spaced, by means of a centrally positioned upright post6, provided with collars 6 having vertical radial grooves 7, into whichthe inner edges of the partitions 5 are sea-ted. In this manner aplurality of upright iiues 8 are formed between the partitions. Only onecollar 6 is shown in the drawing but it will be understood that at leastone additional collar is mounted on the post 6 within the upper portionof the casing which is not shown as broken away.

The dome of the air chamber is provided with suitable perforations 9forming hot air exits, and the base of the air chamber is provided withsuitable cold air inlets 10.

Positioned in the base 2 of the air chamber is any suitable oil or gasburner 11, or other source of heat, such as an electric heater or steamcoil. In the specific form shown, the burner 11 is a gas burner, havinga gas supply pipe 12, provided with gas regulating `cock 13 andairmixing chamber 14, all or' which elements are common to well known gasburners.

In the interest of economical construction, the chamber 1 and partitions5, are preferably made of sheet metal, although, if desired, the entirestructure may be cast or otherwise constructed.

From the foregoing description, the operation of the a'ir heater will bereadily understood, but it may be described briefly as follows:

Burner 11 having been ignited it causes cold air, by suction, to enterthe base 2 of chamber 1 through air inlets 10, whereupon said airbecomes mixed with the products of combustion from'the burner and thusheated, whence the mixture passes upwardly through the vertical flues 8,formed between the partitions 5, and inds exit at the top of the airchamber through the perforations 9. These iues being relatively smalland numerous, preclude any eddying of the rising columns of heated air,or heated air mixed with the products of combustion, and this mode ofoperation forms the principal feature of the invention. Y

The super-structure described, embodying the air chamber provided withthe vertical grooves, cold air inlet and warm air exit may` beConstructed separately, i. e., as a unit, and used in conjunction withany well known form of heater, by simply juxtaposing it in relationthereto.

It will be understood that slight changes portable structure hereinillustrated and de- Y scribed. Y

That I claim as new and desire to secure by Letters vPatent is: i

A gas heater of the class described embodying a substantially frustoconical casingV inverted so that its wall diverges upwardly, a chamberedbase positioned subjacent the casing and Jforming a combustion.

chamber, a perforated cover for said casing and an upright postextending vertically through the heater, in combination with radiallyextending partitions positioned longitudinally of the interior of thecasing to divide said interior into a plurality of upwardly extendingcirculating passages segmental in cross section and divergin in anupward direction, means carried by t e post for spacing the partitionsand a gas burner positioned in the combustion chamber, whereby all Vtheair passing through the chamber is mixed with the products of combustionand circulates upwardly through the diverging passages to be dispersed'th rough the perforations of the cover.

In testimony whereof, I have signed my name to this specification.

MICHAEL imonamiorrri.V

